Title

Selective mode excitation by nonaxial evanescent coupling for bandwidth enhancement of multimode fiber links

Authors

Authors

L. Vaissie;E. G. Johnson

Comments

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Abbreviated Journal Title

Opt. Eng.

Keywords

local area networks; optical fibers; evanescent coupling; gradient index; OPTICAL FIBERS; LAUNCH; Optics

Abstract

We present an analysis of conditioned launch in a gradient-index multimode fiber (MMF). Selective mode excitation is obtained by nonaxial evanescent coupling between two highly asymmetric side-polished fibers: a single-mode fiber and an MMF with an exposed core. An index-matching slab improves the coupling efficiency and selectivity. The simulation shows that about 40% of modes, only high-order modes, are excited in the MMF. When compared to an overfilled launch, the bandwidth of a perturbed index fiber is enhanced more than twofold for large parameter variations. (C) 2002 Society of Photo-Optical Instrumentation Engineers.

Journal Title

Optical Engineering

Volume

41

Issue/Number

8

Publication Date

1-1-2002

Document Type

Article

Language

English

First Page

1821

Last Page

1828

WOS Identifier

WOS:000177626800012

ISSN

0091-3286

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